토류벽의 최적신뢰성 설계규준

강승룡,이증빈,정철원 원광대학교 공업기술개발연구소 1993 工業技術開發硏究誌 Vol.13 No.-

The norminal safety factor has been used widely widely and uniquely at present to check the stability of the earth retaining structure. However, probability of failure would be logically attempted to check the reliability of the structure in future. This study investigates optimum reliability based disign criteria for the earth retaining well, and proposes practical optimum algorithm which is based on expected total cost minimization theory(ETCM) for the reliability analysis and the derivation of reliability based design criteria. It may be asserted that the proposed ETCM reliability based criteria for the earth retaining wall may have to be incorporated into the current highway bridge design codes as a design provision corresponding to the USD provision of the current highway bridge design code.

일반연제 발표 : 산과학 1 ; 태동,심박,자궁수축감시장치를 이용한 태아 운동 습관화검사

강승룡,조재성,한성식,박용원,김재욱 대한산부인과학회 1998 대한산부인과학회 학술대회 Vol.82 No.-

채취방법에 따른 자궁경부세포진검사의 위음성률 비교

강승룡 ( Seung Ryong Kang ),박찬규 ( Tchan Kyu Park ),이정필 ( Jung Pil Lee ),김정연 ( Jung Yeon Kim ),원종건 ( Jong Gun Won ),김수녕 ( Soo Nyung Kim ) 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.12

In recent years a number of devices have been designed to improve the quality of cervical cytologic smears. The Lonstenn, a new cervical cytology sampling device, was prospectively evaluated. The population consists of 191 patients who visited the outpatient dispensary for cervical cytologic smears at the department of Obstetrics and Gynecology, Yonsei Medical Center from August through December, 1993. The subjects were assigned to one of three techniques: the Lonstenn alone(group 1), a combination of Cytobrush plus spatula(group 2), and a combination of cotton swab plus spatula. The cervix was inspected colposcopically and sampled by biopsy in all patients. The histopathologic findings were compared with the findings of cervical cytologic smears obtained by the three sampling techniques. Bethesda system was used in the classification of cervical cytologic smears, higher grade than LGSIL was defined as a positive finding. Higher grade than CIN I was defined as a positive finding in colposcopic directed biopsy. The results are as follows: 1. Comparing the distribution of patient age among the three groups, 69 patients sampled by Lonstenn alone ranged from 30 to 63 years(mean 46.2 years), 74 patients by Cytobrush plus spatula ranged from 25 to 76 years(mean 46.2 years), and 48 patients by cotton swab plus spatula ranged from 25 to 75 years(mean 44.2 years). 2. Comparing the results of positive cytologic smears and dysplastic or cancer cells seen in colposcopic directed biopsy, the sensitivity and specificity was 67 % and 96 % in the group sampled by Lonstenn alone, 79 % and 96 % in the group sampled by Cytobrush plus spatula, and 62 % and 96% in the group sampled by cotton swab plus spatula, respectively. 3. The false-negative rate was 33 % in the Lonstenn group, 21 % in the Cytobrush plus spatula group, and 38 % in the cotton swab plus spatula group, respectively. 4. The positive predictive value was 80 % in the Lonstenn group, 92 % in the Cytobrush plus spatula group, and 80 % in the cotton swab plus spatula group, respectively. 5. In postmenopausal patients, both Lonstenn group and Cytobrush plus spatula group showed the highest sensitivity in obtaining dysplastic or cancer cells. In premenopausal patients, Cytobrush plus spatula group showed the highest sensitivity in obtaining dysplastic or cancer cells. The above results suggest that the combination of Cytobrush plus spatula is the most adequate screening method for detection of dysplastic or cancer cells.

인터넷 토론방의 의견표명 억압요인 연구 : 포털사이트 다음 <아고라> 이용자를 중심으로

김유석,조성경,강승룡,최인호,김성태 한국언론학회 2009 한국언론학회 학술대회 발표논문집 Vol.2009 No.10-3

포스타 : 산과학 ; 심장외 선천성 기형을 가진 태아에서 선천성 심장기형의 빈도

유용균,이연혜,한성식,강승룡,윤혜정,조재성,박용원,김재욱 대한산부인과학회 1998 대한산부인과학회 학술대회 Vol.82 No.-

선천성 근긴장성 근이영양증과 연관된 재발성 양수과다증 1예

양옥현,이건호,이경술,강승룡,공두식,장태기,백종우,백영일 대한산부인과학회 2005 대한산부인과학회 학술대회 Vol.91 No.-

태동·심박·자궁수축감시장치를 이용한 태아 운동 습관화 검사

김영한,김재욱,박용원,조재성,한성식,권혜경,강승룡,정재은 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.7

목적: 실시간 초음파 대신 태동·심박·자궁수축감시장치를 이용하여 태아 운동 습관화를 관찰하고자 하였다. 연구방법: 1998년 5월 부터 1998년 9월 까지 본원에 내원한 임신 32주 이상의 산모 50명을 대상으로 복벽에 태동·심박·자궁수축감시장치[모델명; Hewlett-Packard M1350A 50series]를 장착하고, 3초간의 진동음향자극을 약 30초 간격 으로 10회에서 51회 동안 가하였다. 결과: 총 50례 중 22례에서 정상 태아 습관화 형태를 보였으며, 나머지 28례는 비정상 태아 습관화 형태가 관찰되었다. 산전 또는 산후에 태아의 예후에 영향을 미칠 수 있는 산모나 태아의 위험 인자를 고려할 때, 22례의 정상 태아 습관화 군에서는 2명외에는 특이한 점이 발견되지 않았으나, 28례의 비정상 태아 습관화 군에서는 15례에서 중증 임신 중독증, 저체중아, 태변 착색, 수막염, 패혈증, 수두증, 심장 기형의 소견을 보였다. 결론: 태동·심박·자궁수축감시장치는 태아 운동 습관화검사에 이용될 수 있을 것이라 사료된다. Objective: To evaluate fetal motor habituation pattern using kinetocardiotocography. Methods: Fifty patients, gestational age above 32 weeks, from May to September 1998 have been studied. Kinetocardiotocography[Model: Hewlett-Packard M1350A 50series] was used with vibroacoustic stimulation of 3 seconds duration with 30 seconds interval for 10 to 51 times. Results: Of the 50 patients, 22 showed normal habituation pattern and the remaining 28 showed abnormal habituation pattern. Concerning the factors which may have influenced the pregnancy outcomes, of the 22 patients who had normal habituation pattern, there were 2 obstetric complications. But of the 28 patients who had abnormal habituation pattern, 15 result in PIH, low birth weight, meconium staining, meningitis, hydrocephalus or heart anomaly. Conclusion: Kinetocardiotocography can be used in observing fetal motor habituation.

만성 고혈압 환자에서 임신 중기 자궁동맥 도플러 초음파의 유용성

김재욱,박용원,조재성,이연혜,유용균,윤혜정,강승룡 대한산부인과학회 1999 Obstetrics & Gynecology Science Vol.42 No.4

임신 중 중증 만성 고혈압 환자의 경우에는 중복 자간전증, 태반 조기 박리, 조산, 태아 성장지연 등이 자주 동반되어 태아와 산모의 유병율 및 주산기 사망율을 증가시키기 때문에 이러한 위험성을 감소시키기 위해서는 주산기 예후를 예측할 수 있는 적절한 산전 검사가 필요하다. 이에 본 저자들은 만성 고혈압 산모에서 임신 중기에 도플러 초음파를 이용하여 자궁 태반 혈류 및 혈관 저항을 반영하는 자궁동맥의 혈류 속도 파형 및 초기 이완기 함요를 측정, 분석하여 이에 따른 신생아의 주산기 예후를 비교함으로써 주산기 예후 예측에 대한 도플러 초음파의 유용성을 알아보고자 하였다. 1989년 9월부터 1998년 6월까지 연세대학교 의과대학 부속 세브란스 병원 산부인과에 내원하여 만성 고혈압으로 진단받은 임산부 중 임신 중기에 도플러 초음파 검사를 시행받은 104명을 대상으로 자궁동맥의 수축기 최고 혈류 속도와 말기 이완기 최저 혈류 속도의 비[S/D ratio] 및 초기 이완기 함요 여부에 따른 신생아 예후를 분석하였다. S/D치가 2.6이상이거나 초기 이완기 함요가 있었던 군에서는 S/D치가 2.6미만이고 초기 이완기 함요가 없었던 군보다 자궁내 태아 발육 부전, 태아 곤란증, 주산기 사망, 임신 중 고혈압 악화 등의 주산기 예후가 불량하였다[26.3% 대 14.9%, 29.8% 대 19.2%, 14.0% 대 0%, 24.6% 대 10.6%]. 그리고, 자궁동맥 S/D치와 이완기 함요를 이용한 불량한 주산기 예후를 예측하는 민감도, 특이도, 양성 예측률, 음성 예측률은 75.4%, 61.7%, 70.5%, 67.4%이었다. 따라서 만성 고혈압 산모에서 임신 중기의 S/D치나 초기 이완기 함요를 이용한 도플러 초음파 검사는 산전진찰에 있어 유용하며, 특히 비정상 자궁동맥 도플러 파형을 보이는 경우는 불량한 주산기 예후를 예측할 수 있는 좋은 지표로 이용될 수 있으리라고 사료된다. Purpose: The purpose of our study is to assess the predictive ability of Doppler velocimetry of uterine circulation during midtrimester in selected group of chronic hypertensive pregnant women to predict the poor perinatal outcomes. Methods: We studied 104 cases of chronic hypertensive pregnant women taken Doppler ultrasonography during 24-28 weeks of gestation from September 1989 to June 1998. We measured systolic/diastolic[S/D] ratio and early diastolic notch of uterine artery. We defined that the groups showing S/D ratio was greater than 2.6 or early diastolic notch was present are abnormal, and the others were normal. Results: The perinatal outcomes of the abnormal Doppler group were more poor than that of normal Doppler group in respect to intrauterine growth restriction, fetal distress, perinatal death and developing pregnancy-aggravated hypertension[26.3% vs. 14.9%, 29.8% vs. 19.2%, 14.0% vs. 0%, 24.6% vs. 10.6% respectively]. And the sensitivity, specificity, positive predictive value and negative predictive value of uterine artery S/D ratio and diastolic notch for predicting poor perinatal outcome were 75.4%, 61.7%, 70.5% and 67.4%. Conclusion: We can suggest that the Doppler flow velocity waveforms of the uterine artery during midtrimester are useful to predict the pregnancy outcomes and to make a better treatment protocols for patients with chronic hypertension.

복강경하의 흔적자궁 임신진단 및 처치 1 례

김재욱,조동제,이위현,차선희,이미화,이경술,원종건,강승룡 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.10

In this presentation, we describe a case of unruptured rudimentary uterine horn preg-nancy. The patient was diagnosed by laparoscopy and removed by laparoscopic resection of the pregnant rudmentary uterine horn, and then some articles concerned to this subject are reviewed briefly in order to discuss relevant method of diagnosis, treatment, and clinical characteristics.

임신중 발생한 포진상 농가진 1예

김동현 ( Dong Hyun Kim ),한승경 ( Sung Kyung Hann ),김세광 ( Sei Kwang Kim ),강승룡 ( Seung Ryong Kang ),이지원 ( Ji Won Yi ),김재욱 ( Jae Wook Kim ) 대한산부인과학회 1997 Obstetrics & Gynecology Science Vol.40 No.12

Impetigo herpetiformis is a rare disease, which traditionally has been classified among the unique dermatoses of pregnancy. It is associated· with severe maternal and fetal complications in case of misdiagnosis and delayed treatment. Diagnosis is based on the overall clinical, laboratory, and histological features. Promt and aggressive treatment is needed, and termination was effective in severe case. This pregnant woman was 32-years-old multigravida with transverse lie of fetus. At 24 weeks gestation, she developed erythematous scaly annular patchs with papules and pustules on inner thigh. The skin lesion was aggravated at 31 gestational weeks. The skin of the affected area was biopsied and the result was consisitent with impetigo herpetiformis. Treatment commenced with intravenous fluids, intravenous dexamethasone under the careful fetal well being monitoring. Cesarean section was done due to transverse lie of fetus, and a normal healthy baby was delivered, following which the patient condition improved rapidly. At one month after the delivery, the skin lesions of the patient was fully recovered.